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68 lines
2.4 KiB
C
68 lines
2.4 KiB
C
/* Basic platform-independent macro definitions for mutexes,
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thread-specific data and parameters for malloc.
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Copyright (C) 2003 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#ifndef _MALLOC_MACHINE_H
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#define _MALLOC_MACHINE_H
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#undef thread_atfork_static
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#include <atomic.h>
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#include <bits/libc-lock.h>
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__libc_lock_define (typedef, mutex_t)
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#define mutex_init(m) \
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__libc_maybe_call2 (pthread_mutex_init, (m, NULL), (*(int *)(m) = 0))
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#define mutex_lock(m) \
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__libc_maybe_call2 (pthread_mutex_lock, (m), ((*(int *)(m) = 1), 0))
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#define mutex_trylock(m) \
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__libc_maybe_call2 (pthread_mutex_trylock, (m), \
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(*(int *)(m) ? 1 : ((*(int *)(m) = 1), 0)))
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#define mutex_unlock(m) \
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__libc_maybe_call2 (pthread_mutex_unlock, (m), (*(int *)(m) = 0))
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/* This is defined by newer gcc version unique for each module. */
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extern void *__dso_handle __attribute__ ((__weak__));
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#include <fork.h>
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#ifdef SHARED
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# define thread_atfork(prepare, parent, child) \
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__register_atfork (prepare, parent, child, __dso_handle)
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#else
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# define thread_atfork(prepare, parent, child) \
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__register_atfork (prepare, parent, child, \
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&__dso_handle == NULL ? NULL : __dso_handle)
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#endif
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/* thread specific data for glibc */
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#include <bits/libc-tsd.h>
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typedef int tsd_key_t[1]; /* no key data structure, libc magic does it */
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__libc_tsd_define (static, MALLOC) /* declaration/common definition */
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#define tsd_key_create(key, destr) ((void) (key))
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#define tsd_setspecific(key, data) __libc_tsd_set (MALLOC, (data))
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#define tsd_getspecific(key, vptr) ((vptr) = __libc_tsd_get (MALLOC))
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#include <sysdeps/generic/malloc-machine.h>
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#endif /* !defined(_MALLOC_MACHINE_H) */
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